sweep hand中文什么意思

(钟表的)长秒针。

• sweep:    vt. (swept ) 1.扫(房 ...
• hand:    n. 1.手；(猴子等的)脚；(一般 ...
• sweep second hand:    (钟表的)长秒针。

英文释义

名词

1. a second hand that is mounted on the same center as the hour and minute hand and is read on the minutes
   同义词：sweep-second